C PROGRAM TO CHECK WHETHER THE ENTERED NUMBER IS AUTOMORPHIC OR NOT.

An automorphic number is a number whose square contains the same number as last digits or digit. Example :, 5² = 25,6² = 36

Program:

#include <stdio.h>

main()

{

               int i,n,y,flag=0;

               printf("enter a number");

               scanf("%d",&n);

               y=n*n;

               while(n>0)

               {

                              if(n%10 == y%10)//if units place digits are same

                              {

                                             n=n/10;

                                             y=y/10;

                              }

                              else

                              {

                                             flag=1;

                                             break;

                              }

               }

               if(flag==0)

                              printf("given number is automorphic");

               else

                              printf("given number is not automorphic");

}